Short answer, of course. In Jacob 2, the Nephite prophet Jacob condemns polygamy: "Behold, David and Solomon truly had many wives and concubines, which thing was abominable before me, saith the Lord" (2:24). The Nephite practices had "broken the hearts of [their] tender wives" (2:35). Yet, the Lord says "if I will . . . raise up seed unto me, I will command my people" (2:30), summarized in the LDS headnote as "Jacob condemns the unauthorized practice of plural marriage." So what exactly is a modern Mormon to make of Jacob 2? Here is your question and (should you find them a useful starting point) four different positions to get your replies started in one direction or another.
Question: Is Jacob 2 at all relevant to the modern 19th-century Mormon practice of polygamy, and if so how?
1. Not relevant. Unlike Nephite women and children, Mormon women and children did not suffer emotional trauma under polygamy, so the Jacobite denunciation is not really applicable to the Mormon case. Only modern revelation is relevant to the modern Mormon practice.
2. Relevant, in that Mormon women and children did suffer, but such is the sacrifice they were called on to make. Jacob 2:30 plainly shows God will command polygamy from time to time, and this was one of those times.
3. Relevant. Mormon women and children did suffer, which is why polygamy is offensive to God and Western sensibilities, and should not be tolerated. Mormon polygamy in the 19th century was simply a mistake, best forgotten and not repeated.
4. Not relevant. Neither Jacob 2, D&C 132, nor any other text is determinative. Independent moral reasoning is sufficient to convince any reasonable person that polygamy is wrong and immoral, and should not be practiced.